Lock mechanism



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vwentoz CLlvE W. LANPHERE @Zug zs @1t/tommy April 3, 1928.

c. W. LANPHERE LOCK MECHANISM Filed Sept. 9. 1926 4 Sheets-Sheet 4INVENTOR CLIVE W' LANPHER ATTORNEY@ Patented Apr. 3, 1928.

UNITED STATES o'LIVE W. LANrHE-nn, or NEW YORK, N, Y.

LOCK MEGHANISM.

Application fried September The present invention relates lto a lockhaving an interlocking bolt, a latch, and reversible elements making itadaptable to right and lett hand doors.

.More s peciiically the invention provides a locking mechanismcomprising an arcuate bolt vmovable outwardly from a casing through 'astrike and into the casing, and a spring pressed latch to engage thestrike.

The 'present construction is such that the bolt passes through a curvedpath and spans lthe gap between the door and tl e VVjamb at two diterentpoints spaced a relatively great 'distance apart, thus the bolt offersthe vsame resistance to a direct force as would two individual lockingbolts.

Because ot the curved path through which the bolt travels it embraces aportion of the keeper making it 'exceptionally resistant to a separationof the bolt and keeper by means oi a jin'in'iy or other tool wheninserted .between the 'door and j amb as is often etliective inattaining an. opening of a door equipped y with locks of the straightbolt type.

A lock ot' similar fundamental construction to the present invention isshown and described in my Patent No. 1,584,950, issued May f1.8, 1926.The lock herein shownand described embodies various improvements in thearrangement. or' the operative parts, and attains the 'desired 'resultwith a reduced number 'of movable elements. By reason of the variousimprovements the present lock may be more economically `constructed andthe parts are more readily and conveniently assembled making the articlemore practical :trom a manufacturing standpoint and salable at a pricewhich gives the lock a Wider range to a greater number of uses.

Brieiy, 'the y several improvements include the location ot m f c linderoutside the )ath y l oit' the bolt making 'it possible to reverse the cv'lfini-ler, a latch and latch hubs therefor reversible, and 'a catchwhich renders rthe lock adaptable i'o'r use. with mast-er key. Also,

improved means for locking the bolt in its projected and retractedpositions, and tor releasing the same. Other improvements comprise atoothed segment and lever, also a vdouble arm lever. which whenoscillated by a knob causes the toothed members to throw or retract thebolt and retract the latch. A flangedguard is also provided to rendersawing or the bolt dcult. The

e, 1926. sei-iai No. 134,446.

above and other icatures will be more clearly raider-stood by reiterenceto the accompanying drawings in which:

Fig. 1 is a plan view of the inside of the lock the cover plate havingbeen removed and showing the 'bolt retracted.

' Fig. '2 is a view similar' to Fig. 1 but with the bolt projected. A

Fig. Sis a view similar to Fig. 1 but shows several of the movable partsin diiferent positions and illustrates the operation of the lock by akey lever on 'a key cylinder', the key cylinder being `shown positionedin a threaded hol-e in the bottom wall oi the casing and illustratingvthe reversibility of vthe lock.

Fig'. 4 is a sectional view of thelock taken substantially on lineIV--lV in Fig". 1 and shows the lock applied to a door. y

Fig. 5 is a cross sectional view 'of the lock taken substantially online V-V in F ig, 3.

Fig. (5 Vis a :tragn'ientary enlarged view of the bolt and its relationto a keeper.

Fig. 7 Vis a detail view oic a bolt lockingl detent.

Fig. 8 is an ontside'vi'ew of the lock showing a key cylinder on thecover plate.

Fig. 9 a view of a knob 'for 'actuating the bolt. y y

Fig. 10 is -va 'iront view 'ot a keeper. Fig. 10a is an end view of thekeeper shown in Fig. 10.

Fig. l11 is a detaii view oit' a latch.

Fg. 12 is a plan view 'of the latch.

Fig. 153 is a vie'wo't a toothed plate.

Fig. 1li is 'a 'spiral spring.

Fig. 15 is `a view et a cam plate.

16 is an end view of the cam plate, shown in Fig. 15. The several partsshown in Figs. 13, 1st and 15 when assembled, constitute a boltactuatying unit.

Fig. 17 a view oil a Ipart oit-my lock Yshowing in detail, mechanismwhereby the lock may be 'rendered inoperable except by thek 'applicationoi" 'a master key.

F" 18 is a perspective View of a. latch jii'orm g pa'r't ot. themechanism shown in Fig. it, and

Fig. 419 is a View taken Vsubstantially on lin'e in Fig. 17. p

An 'embodiment of the present invention as shown in the preferred formis applied "to 'a lock of the mortse type. It is, however7 obvious thatthe invention has equal utility when applied to a rim-type lock.

The selected construction of lock to illus trate the practicability ot'the invention may include a housing or easing 26 comprised ot a bottomwall 21 and sidewalls 22, 23, 24 and 25. oit the casing to provide afacing 26 and with extensions 26 with screw holes for festem ing thelock to a door and a it'ace plate 27 may be provided and secured to thefacing by suitable screws. i AV cover plate 29 may complete the housingand may be fastened by suitable machine screws disposed in tapped holes31.

My lock mechanism may comprisecooperating` elements which are primarilythe same asthose shown and described in my patent above reierred to,certain improvements to `the general construction havingbeen made andgreater simplicity of operation being attained.

As illustrated, the lock may comprise an arcuate bolt 32 having atongue33 integral with an extended rear portion or tail-piece 34 and a lin orradius arm 35 having a hub 36 (see Figs. 5 and 6) journaled on a post orpivot pin 37. The post may be integral with the bottom wall 21 of thehousing and may be provided with a reduced portion which provides asupplemental pivot 38, the .purpose ot which will be later described.

The arcuate bolt 32 is thus rotatable about the post 37 and may beoscillated by means of a knob 39 (see Fig. 4) or a key 40 under theaction ot associated cooperating elements. The knob 39 may, as shown, beprovided with aV shank 41 extending through the woodwork 420i a door 43and into` a barrel member 44 carried in a disk member or insert piece 44in which it is rotatable.

The disk member is threaded and adaptedl to be screwed into athreadedaperture as provided tor the key cylinder'of a tumbler type oi keycylinder. Asmore fullylhereinatter .set forth, a key cylinder isdisposed in the cover plate of the lock and in axial alignment with diskmember 44.

The Jtree end jot the shank 41 is disposed in the barrel member 44 whichmay be provided with a double arm lever termed herein a knob-lever 45associated with the knob in a manner to be later described (see Figs. 1and 2). two substantially radially disp-osed arms46 and 47 positionedfor engagement with an arm 4S of a bell-crank member or gear segmentlever 49. A reversible stop screw pin 1 5() disposed on the disk member44 is provided to limit the movement ot the knoblever 45 which preventsit retracting the latch. The stop pin 50 may, as shown, be positioned toengage one side ot double arm lever 45 or the pin may be positioned inthe threaded Vaperture 50 to engage theopposite The side wall 23 isextended at each end This knob-lever is provided with side of the saidlever. Thus the pin may act as a stop when the lock is reversed.

The opposite arm 51 of the gear segment lever is provided with a toothedsegment 52. y The gear segment lever 49 is movable on a pivot 53fastened to the bottom plate 21 of plateV and serve as cam members forpur* v poses to be presently set forth. Each ot the raised portions hasa tapped hole 61 whereby the disk mayv be secured thereto by screwsextending through suitably `disposed holes 62 in the disk. y Before thedisk 55 and plate 56 are secured together a spira-1 spring 63 isdisposed between them; the inner end ot' the spring being secured in aslot 64 formed in a tiange 65 at the perimeter of a centrally locatedcircular aperture 66 in the plate 56. The disk 55 and plate 56 with thespiral spring therebetween may be disposed for rotation about thesupplemental pivot 38, the aperture 66 being of such dimension as toprovide a running fit for the united elements which asa whole, may betermed an intermediate bolt and latch actuating unit. This unit, asVshown in Fig. 5

Vwhen in position upon the pivot 38, is located above the hub of thearcuate bolt 32 and the free or opposite end 67 of the spiral spring 63may be secured in a slot 68 provided in a lug` 69 integral with the iin35 of the bolt 32 (see Fig. 6). Vhen the bolt actuating unit is n-itsproper position with relation to the bolt, the lug 69 is disposed at oneside ot the edge of the plate 56 and between the projecting cam members57 and causes the gear segment 54 ot the disk 55 to move the gearsegment 52 which takes the position shown in Fig. 1. The projection 57ofthe plate 56 then engages with when the key 4() is released after aretraction of the bolt and latch. `lVhen the bolt 32 is 1n its retractedposition as shown in Figs. 1

the lug 69 on bolt 32 and serves asa stop,

and 3 a locking detent 70pivoted at 70 opcratesA under the action of aspring 71 to enter a notch 72 in the bolt 32 and thus hold the samerinits retracted position. The detent may, however, be disengaged from thebolt by a movement of the knob lever 45 which engages with a cam surface73 one end of the detent.

For the purpose of automatically actie ating the double arm lever 45 'toclear the the use of a tool.

Leonesa 3 detent and permit it to engage lthe bolt a spiral spring 7 OVis ,provided Ahaving one end secured at the center of rotation of thelevel 45 and the opposite end secured in a slot in a suitably positionedlug 70. Moving the arms 15 or 71 toward the surface 84 of the bell crank48 disengages the detent 70 and permits 'projecting the bolt.

An actuation of the bolt by turning the key t() may be effected vbymeans oi' a .cam arm 71 fastened to the inner side ot a key barrel 72 ofany suitable type or' key cylinder lock 74- (see Fig. il) extendingthrough the Woodwork of door 43 upon the side opposite to the knob 89.The cam arm 71 and the knob lever. 45 are so disposed as to be rotatableabout a common axis. The key cylinder may be screwed into the coverplate 29 of the housing 2O and in alignment with the disk member '44 asabove mentioned.

Two'pairs 'of screw rods 75 and 7 6, shown in Fig. 1, and 7 5 and 76 inFig. al., lprevent rotation of the key cylinder by a Wrench or othertool and afford the adaptation of the key cylinder to either side of thelock, makf ing it reversible. The disk member liet and the key cylinder721 are thus interchangeable as the cylinder 74@ is provided Withnotches 7 l and the disk member with notches 7 4L lto receive the screwrods. The 'free ends of the rods 75 and 76 and 75 and 76 may extend tothe facing 26 of the casing and are accessible to be screivedin placeafter which the face plate 27 may be Jfastened in place. It will beevident that 'by means of the rods 75 and 76 and 75 and 76 which lockthe 'key cylinder in place, the `force required to move it would begreater than attainable by y Any attempt to turn the cylinder Will beopposed 4by a direct thrust against one rod and across the other I mayfurther insure against a 'ma-nipi'i'lation of the cylinder by providingescutcheon plates 77 and 7 8 'show-n' in F-ig. 4t and having the plate77 of such 'thickness that 'the end 79 of the key cylinder whichprojects lfromy `the Wood of the door Will be flush ,with the surface ofthe plate, thus preventing` the application of a. tool to the cylinder.The plates 77 and 78 may be secured by bolts 81 and 82 extending throughthe door and plates the nuts 88 of the bolt's being on the i-nner Vsideof the door.

Referring again to the lock mechanism it uill 'be noted that 'the cama'rm 71 operates, when the key l0 is turned to `engage with surface 84of the arm 48 ofthe gear segment 49'to retract the bolt 82 andthesurface 84C toproje'ct it.

It the bolt 82 is to be projected an initial or partial rotation ofeither the key or knob causes the gear segment 49 to be oscillated,causing a rotary movement of the bolt actuating unit to move theprojecting portion '57 of the plate 56 Which is in 'Contact With the lug69 on the bolt. A continued movement ot either the knob or key resultsin the projection of the. bolt.

Vhen projected, the bolt is locked against return movement by meansother than the knob 39 or key 41. The means for locking the bolt may'comprise a locking paivl 85 movable on a pivot having a projection 86to engage with a tooth or lip 87 integral 'with the hub ot the bolt 82(see Fig. 6).

The locking pavvl is normally moved to locking position by a spring 88.The projection 86 of the pawl is thus pressed against the outer surfaceof the hub 86 and traverses the same until it rides over the tooth 87 atwhich time the bolt is Wholly projected.

The vrpawl must, however, be lifted to permit 'a retraction of the boltand in the present construction this can only be. accomplished by amovement of the bolt actuating unit and consequently only by a partialrotation of the knob 89 or key al. The pavvl 85 is therefore formed witha concave surface 89 so as to provide a greater distance between thepaivl and hub 86 adjacent to the projection`86 than between the tree end91 of the paWl and the hub. This space or clearance permits the cammember 58 to take a position close. to the projection 86 when the boltis projected and toengage with the end 91 of the pawl as the plate 56moves under the action of the knob or key. The movement of the plate 56results in an engagement between the member 58 and lthe pavl 85 to liftthe latter, as shown in Fig. 7

and release the ybolt for retraction. The necessary initial movement ofthe bolt actuating unit comprising the plate 56 is provided ifor si'ncethe said unit is free to move independently of the bolt until theprojecting 'portion or cam member 58 engagesr the lug '69 of the bolt7this contact occurring after a vpartial movement of the knob or keyWhich carries the bolt along to its retracted position.-

lIn addition to the bolt 82 it is, vof course, desirable rto provide thelock with a latch 'for general use and particularly 4tohoid lthe door'closed when the bolt is not locked. Any suitable latch mechanism may beemployed. The mechanism shown includes a latch bar 92 having a beveledend 98 normally projecting 'from the casing under the action ot ahelical spring 94 positioned between the vbeveled end 92 and a guide 95.The latch bar has an extension 96 terminating in' an offset portion 97"to engage a nose piece 98 on la yoke 99. The yoke is constructed Withan arm 101 adapted to rock upon a fulc'rum 102 ant is held underVtension by engagement with an end ot a spring 1023. The yoke 99 .isdisposed about a lhub 104i having a rectangular aperture 105 to receivea spindle for knobs 106 at opposite sides of a door in the usual manner.

The hub 104 is provided .5

with a lever arm 104 normally in engagement with the nose'piece 98 ot'the yoke 99. Thus when a knob 106 is turned in either direction to movethe latch inwardly the nose piece eiitects a movement of the yoke inopposition to springs 94 and 103.

It is desirable, however, to eliect `an automatic retraction or" thelatch When the bolt 32 is retracted by the key. The latch therefore isassociated vvith the lock actuating unit by a rocker bar or lever 107,one arm ol which is disposed in a slot 103 in the latch 92 (Figs. 11 and12). VThe opposite end 113 of the lever is positioned to be eni gaged bythe cam member 57 ot the pla-te 56 on the bolt actuating unit. Whenr thebolt 32 is retracted by the key, the cainmember 57 engages the lever end113 and the latch is retracted during the linal movement ot the key."When the key is returned to its initial position the cam member 57,under the action of the spring 63, will return to its contact with lug69 on the bolt 32 and the latch 92, under the action of the spring 94,

will be projected and disposed in a suitable aperture 109 oi? a. keeper110 having` the necessary apertures 111 and 112 for the reception ot'the bolt 32. .Y

It will be noted that in the present construction the latch 92 isreversible and provided With slots 108 on both sides thereof to receivethe lever 107 in" either a right or left hand lock thereby avoidingseparate latch bars for each condition. For the purpose of holding` thelatch 92 inoperable l may provide' the usual push button stop 115 andreleaser 114 movable through suitable apertures in the Wall 23 and theface plate 27 et the lock and associated by a pivot/ed member 116.

The push button 115 may be provided with an extension 117 (see Fig. 2)arranged .to have an end 118 thereof inserted into a notch 119 formed inthe lever arm 104 of the latch hub 104. Vhen the end 118 is disposed inthe notch the latch hub will be held immovable and may be released bypressing the push button 114. A second latch hub 104 is looselyconnected bya collar (not shown) to the hub 104. Their positions areinterchangeable in the usual manner.

The keeper or strike 110 (sce Fig. 1 sometimes termed a guard orstriking plate into which the bolt 32 is projected may be similar tothat set` forth in the above mentioned patent, however, l have added alongitudinal flange 121 and as wvill be noted, apertures 109 and 109 aresimilar and provide for a reversal of the keeper7 thus if the keeperisreversed by reason of a right or lett hand door, a suitably locatedaperture will be provided for the latch 92.

The present construction of lock is adapted to be-provided With meanswhich may be Lactose manipulated from the inside of the door to lock thebolt in its projected position making it impossible to unlock the doorfrom the outside by means of the usualV key, but permitting thedoor -tobe unlocked when a master key is employed. This construction is iounddesirable when the lock is used on the Y doors of rooms of hotels or thelike so that the occupant may lock the door from intrusion except inthecase of an emergency. An

authorized person with the proper 'master .ing a plug and sleeve. Thiscylinder has the usual tumblers 127 which may be moved by a key 128 topermit a rotation of the key plug 129 causing a movement of the leverarm 130 to actuate the gear lever V49. A second lever` arm 131 is,however,` provided with this type ot key cylinder Which lever arm ismovable With a sleeve 132. The sleeve is only movable, however,V whenthe tumblers are actuated by a master key. This action is due to thetact that theordinary key merely` moves thetumblers to the division line133 between the key plug 129 and sleeve 132 While the master key movesthe tumblers to Vthe dividing line 134 between the cylinder 126 and thesleeve 132.

Means for locking the gear lever 49 may comprise ay U-shaped catch 135as shown more clearly in Fig. 18 movable between a guidepiece 136integral with the casingof the lock and a guide piece 137 integral Withthe cover plate of the lock casing. The catch 135 may be provided with afinger piece 13S disposed upon an escutcheon plate 139 of the lock andthe catch may thus be manipulated to engage a stud 140 secured to thelever arm of the gear lever 49. Y

When the catch is engaged with the stud 140 the bolt is in its projectedposition and it will be evident that the bolt can not be moved except bymeans of the master key Vas the catch is so shaped that the arm 130.

can not strike it.' Vhen such key is applied to the lock the sleeve maybe rotated and the arm 131 caused to engage with an end 141 of the catchcausing the catch to be moved and disengaged from the stud 140. Acontinued movement of the key causes an actu-ation of the lgear leverand a`retraction oit the bolt and latch in the above described manner.since the key cylinder 126 is provided with leverarms 130 and 131 whichwill engage the arm 43 of the gear or bell crank lever in a mannerhereinbefore described.

It will be appreciated that with the present construction a key cylindermaybe used on both sides or may be integral with the les to the surfaceof the door,

Although a. preferred embodiment of the invention is shown anddescribedv herein it is to be understood that modiiications may be madetherein Without departing from the spirit and scope ot' the invention asset forth in the appended claims.

lVhat is claimed is:

l. A lock comprising a casing, a guard, a bolt adapted to Vinterlockwithl said guard', spindle means to actuate said bolt from one side ofsaid casing, key-,actuated means ,to actuate said bolt trom another sideot said casing, and means to permit intcrcliangingv the positions ofsaid spindle and said keyactuated means.

2. A lock comprising a casing, a guard, a bolt adapted to interlock withsaid guard, spindle means to actuate said boltt'rom one side of saidcasing, a cylinder lock to actuate said bolt Jrrom another side ol saidcasi ng, means to permit int-erchanging the po,- sitions ot' saidspindle and said cylinder lock, and' a latch.

3,. A lock conprising a casing, a guard, a bolt adapted to interlockWit-h said guard, a reversible latch and interchangeable means toactuate saidr bolt and latch.

it. A lock comprising a casing, lock mechanism supported by said casing,reversible means to operate said lock mechanism, and means offset withrespect to the center of said reversible means for securing the latterto said casing.

5 A lock comprising a. casing, a bolt movable in said casing, and a.iianged guard eugageable by said bolt, said flange projecting towardsaid casing.

6. A lock comprising a casing, an interlocking bolt supported by saidcasing, key-v controlled means to actuate said bolt, manually actuatedmeans to render said keycontrolled means inoperative, saidkey-controlled means being adapted 4to release said second-mentionedmeans.

7. A lock 4comprrising casing, an interlocking bolt supported by saidcasi-ng, and a reversible striking plate or guard cooperatingl with saidbolt.

8. in combination vwith a striking plate, a lock comprising a. boltmovable in a. .curved path, a latch engageable with said striking plate,means 'for actuating said bolt and latch, said means being partiallydisposed outside of the path ot movement of said bolt., and a` cylinderlock, said cylinder lock haring a detached connection with saidactuating means.

9. A lock comprising a. bolt movable in a curved path, bolt cooperatingmeans, a strike having av plurality of apertures to engage said bolt,.said means including actuation means disposed outside or". the path ot'the bolt, said actuation means having a detached connection with itscooperating means.

10. A. lock comprising a casing, a guard, a bolt, ada pted' tolinterlock vi'vith said guard, a latch, spindle means to actuate saidbolt and latch trollfl one side of said casing, key operated means toactuate said bolt and latch troni. another side of said casing, and'means to` permit interchanging the positions of said spindle means andsaidl key operated means.

A lock comprising a bolt, a. detachable gear to actuate said bolt, and agear lever to actuate said gear.

I2, A lock comprising a` pivotal bolt having a radius arlii Qtlset withrespect toy itself and plural interchangeable means toy actuate saidbolt.

, 1255. A lock com Jrisinoa casino' a bolt disv f t) .D7

posed' in said casing, mechanism for operating said bolt, an insertpiece having means toi permit actuation of saidv bolt operatipgmechanism, and a plurality ot means to hold said insert piece in iiXedposition.

1,4. lockcomprising al casing, an interlocking bolt supportec'l by saidcasing, a guard withk which said bolt is adapted to interlock, a leverlcooperating with saidbolt and means including a, lost' motion.bifurcated cam for operating said lever.- r

1 5.' A lock comprising a casing, an interlocking bolt, a' guard adaptedto cooperate with said' bolt, mechanism including a vcylinder 100k@Operate .Said bolt. said casing being adapted to receive saidcylinderlock in either one oit' two positions.

16. A lock comprising a casing, a. guar-d, a. belt adapted to interlockWith said guard, operating means including means to actuate said boltfrom one side o said casing, means for actuating said bolt from anotherside of said casing, and means to permit interchanging the positionsci:l said actuating means.

1"?. lock comprising a casing, a. curved bolt supported by casing, andinterchangeable yoperati-ng means tor said bolt, whereby said lock isadaptable to right, or lett hand doors. Y

1 8. lock comprising a. casing, a curved bolt supported by said casing,a Ilat-ch having ai beveled surface, means to adapt said latch te rightVor left. hand doors by turning said beveled surface to tace in anopposite direction, actuating means for said latch and said bolt andplural independent actuating means for said latch.

19. A lock comprising a casing, a curved bolt supported by said casing,operating mechanism for actuating said bolt, said operating mechanismincluding interchangeable elements for adapting the lock to right andleft hand doors.

20. A lock comprising a casing, a. curved bolt supported by said casing,and a latch, and interchangeable actuating means for said bolt andlatch.

2l. A lock comprising a casing, an arc bolt, a latch, and commonoperating means including a plurality of levers, for actuating said boltand an additional lever for actuating said latch.

22. In combination with a striking plate,

a lock comprising a casing, a bolt mounted in said casing andmovable ina curved path, into and out or' said casing, a latch bolt en gageableWith said striking plate, operating means for said first mentioned bolt,operating means for said latch bolt, a. cylinder lock carried by saidcasing, and having a plug extending` into said casing, said cylinderlock being disposed outside oi" the path ot movement of said bolt andadapted to actuate said bolt andv latch bolt operating means.

Q8. A lock comprising a casing, a keycontrolled pin tumbler, a guard, abolt adapted to interlock with said guard, means to actuate. said boltfrom one side of said casing, means for actuating said bolt from anotherside of said casing, and means to permit interchanging the positions ofsaid respective means.`

2li. A lock comprising a casing,` a bolt movable in a curved path, alatch, common means to operate said bolt `and latch, manual independentmeans to retract said latch, and means actuated from vvithin'the pathofsaid bolt to render said latch retracting means ineliective.

25. A lock comprising abolt movable. in a curved path, operating meansfor said bolt including pin tumbler-actuating mechanism for said boltdisposed outside of the path of movement ot said bolt, plural meansoffcenter to said mechanism to hold said mechanism against movement.

26. AV lock comprising a casing, a pivotal bolt, a. latch bolt, means tooperate said pivn otal bolt and latch bolt trom one side ofvsai'dcasing, and means to operate said pivotal holt Without operatingsaidlatch bolt from the other side of said casing.

n 27. A lock comprising a casing, a. pivotal bolt, means to, projectsaidbolt, automatic meansto hold the bolt looked When in projectedposition,ra latch bolt, aplurality of levers to operate said bolts andkey-operated mechanism carried by'said casing to operate said levers.

28. A lock comprising a casing, a pivotal bolt, a latch, bolt projectionmeans, automatic means to lock the bolt when in vits projected position,a plurality of levers to operate said bolt, key operated mechanism tooperate the levers, and means to operate said latch.

29. A lock comprising a casing, a pivotal bolt, means to project saidbolt, automatic means to hold'said bolt when in its'projected position,a latch, and a plurality of levers to retract the bolt and latch.

30. A lock comprising a casing, a bolt movable in a curved path, manualmeans to hold said bolt inoperative,landv a cylinder lock havingaplurality of levers, one lever adapted to release said manual holdingmeans. Y

3l. lock comprising a casing, a pivotal bolt, a latch bolt, operatingmeans Jfor said bolt, key-controlled means to actuate said.`

operating means, and a knob to actuate said bolt operating means Withoutactuating said latch bolt. i p

A lock comprising a casing, a pivotal bolt, a latch bolt, operatingmeans for said bolts, key-controlled means to actuate said operatingmeans, a knob to actuate said bolt operating means Without actuatingsaid latch bolt, and an additional operatingV means and a knob toretract said latch bolt,`

33. A lock comprising a casing, a pivotal bolt, a latch bolt, means tooperate said piv otal bolt, means to operate said latch bolt, commonmeans cooperating With each of said bolt operating means to actuate theVsame. manual independent means to retract said latch bolt, and meansincluding a. lever to hold said manual means inoperable.

34. A lock comprising a casing, a pivotal bolt, a latch'bolt, means tooperate said pivotal bolt, means to lock said pivotal bolt in a tiredposition, means to operate said latch bolt, common means cooperatingwith each ot said bolt operating means to actuate the same, manualindependent means `to retract said latch bolt. and means including alever to hold said manual means inoperable.

Inv testimony whereof I aix my signature.

OLIVE W. LANPHERE.

.y me

